- narrow band amplifier
- 窄: narrow
- 频带: frequency band; frequency ra ...
- 放大器: amplifier; pantograph; lawnm ...
- 频带放大器: band amplifier; bandwidth amplifier
- 宽频带放大器: all band amplifier; broad band amplifier; broadbandamplifier; fast amplifier; flat spicke; flat staggered amplifier; flat-staggered amplifier wide-band amplifier; wide band amplifier; wide hand amplifier; wide-band amplifier
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